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Dec, 3, 1946.
2,412,151
L. HOLMES, JR’
AERIAL PROJECTILE v
Filed March 22, 1943
2 Sheets-Sheet l
7
.I
fai
JAWEENCE 1Y0; MES, r752”
'
‘
INVENTOR.
ATTORNEY.
Dec. 3, 1946-.
_
L. HOLMES, JR
'
2,412,151
AERIAL PROJECTILE
F'iled March 22, 1943
2 Sheets-sheet 2
LAWQENCEMM/Ias, r77?”
'
'
INVENTOR.
ATTORNEY.
1
'
Patented Dec. 3, 1946
UNITED STATES PATENT GFHCE
2,412,151
AERIAL PROJECTILE
Lawrence Holmes, Jr., Los-Angeles, Calif.
Application March 22, 1943, Serial "No. (480,109
(01. 102—61)
12 - Claims.
'2
This'invention'relates to a high explosive ,pro
:jectile containing ‘one or more, and preferably a
plurality, of secondary high explosive projectiles.
The projectile of my invention is designed to
develop a bursting pattern which will cover a
greater area than will a conventional ‘high ex
tween the several projectiles to develop desired
interference patterns and the pressure gradients
thus largely increased, particularly in the area
surrounding the main projectile and encom
passed by the :locus of ‘:the foci of the explosion
of .the secondary projectiles.
The pattern of the explosive pressure waves
is therefore such that regions of high’ explosive
pressure :and pressure gradients are established
at a distance from the main projectile in a sym
metrical pattern around the projectile.
Since
.
{As .a result .of this ‘augmentation of explosion
force and its dispersal over .avlarge area, the
sphere of effective ‘action of the projectile is
plosive projectile of equal caliber.
largely increased over that'of projectiles-of equal
caliber. In addition to this ‘augmentation and
dispersal of explosion force, the ‘effective pattern
of ?re ‘of the projectile 'is also increased. The
the magnitude of the explosive .force varies in
several'zsecon'dary projectiles and the main pro
versely as the square :of the distance from the
focus of the explosion, it would be necessary, 15 jectile, on explosion, fragment. The frag
merited parts disperse and’are projected at high
when using a conventional projectile, in order to
velocity along the radius of the spherical ex
obtain the same explosive pressure at the points
plosion waves of the several projectiles. The
where the secondary projectiles of my inven
radius "of the effective pattern of ?re resulting
tion explode, to generate an explosive pressure
from ‘the dispersal :of the fragments is enlarged '
which is much greater than that required in my
by
reason of the extension of the ‘zone of high
projectile. ‘This will require a‘greater charge
pressure by the provision of the secondary pro
of powder and a, ‘larger projectile than is neces
jectiles which explode and ‘fragment and them
sary when using the shell of my invention.
The projectile of my invention carries charges 25 selves act ras *foci :of dispersal.
As a .result of vthis action the probability of a
of propellant powder which are timed to ex
vital hit .is increased. This is particularly im
plode at a predetermined position in the trajec
portant in anti-‘aircraft .?re. When ‘my pro
jectile ‘is employed ‘in anti-aircraft ‘artillery an
airship caught in ‘the pattern ‘of ?re will be hit
by fragments moving from ‘the main ‘projectile
and from the secondary projectiles. It ‘will. also
be caught between the severa1 explosion ‘waves
which encompass vit, particularly if it is caught
in the area between the main projectile and the
tory. Second projectiles are expelled preferably
at .a substantial angle to ‘the trajectory of the
main projectile rather than on the line of the
?ight of the main projectile, the purpose being
to enlarge the ‘sphere of explosive action over a
greater area rather vthan to give an increased
range 'to the projectile. These projectiles, and
in'my preferred embodiment the main projectile
also, each carries separate v‘explosive charges.
These several explosive charges, in my preferred
embodiment, are timed so that they all explode
simultaneously. By proper selection of the
amount and character of explosive powder in
each of the projectiles, the explosions may be
timed so that the effective sphere of pressure
generated by the main-projectile and the second
ary projectiles, which explode in a symmetrically
spaced pattern around the central main projec
tile, which may also explode, ‘may be made to
create any desired force pattern. Thus, the
regions of high pressure may be distributed over
a wider area than is attainable .by projectiles of
secondary projectiles or between any two of the
secondary projectiles. In such region it will ‘be
subjected to a crushing and shearing vi'lo'rce
created by the opposing moving ‘masses of air.
The same action will also cause-an overturning L
40
moment to be imposed upon the aircraft which
may be of :such magnitude as to throw the air
craft out of control.
In the speci?c embodiment illustrated in this
application, one shell does the duty of ?ve shells.
‘In ‘my invention as here speci?cally illustrated,
the ?ve shells explode simultaneously in ‘a pat
if the explosions are spaced properly. The 'ex
plosions may be so spaced that the effective
tern of ?ve uniformly spaced, simultaneously
exploding shells. An air-craft caught in :‘this
pattern of fire is ‘subjected to an explosive force
directed from the spaced foci of explosion and
subjected to the fragments and explosion waves
spheres ‘of explosion waves interfere only in the
region of relatively low explosion pressures and
While my projectile has a particularly useful
equal caliber of conventional design, particularly
are thus substantially'tangent to each other, or
the explosive force is properly ‘distributed be—
coming from the ?ve projectiles.
‘
application to anti-aircraft artillery, it is useful
also in other forms of artillery and also as air
3
2,412,151
craft bombs. In all such applications the in
crease in the e?ective radius of action of both
the explosive force and of the ?re pattern in
creases the value of the shell or bomb.
My invention will be further described in con
nection with the accompanying drawings which
' 4
is a compression spring 31. Fig. 5 shows the
striking pin in the retracted position and Fig. 6
shows the striking pin in ?ring position. Bracket
42 carries a cap M which when struck by pin 35
sets off the powder charge.
In the central tube 4 is positioned a member
I9. This member reaches to near the bottom 3
of tube 4, thus forming a powder chamber I 8.
an illustration and not as a limitation of my in
The member I9 is provided with an axial ?ash
vention. In the drawings:
10 tube 22 and an annular powder chamber 25. The
Fig. 1 is a vertical section of my projectile illus
bottom of this member I9 is pierced by a hole 21
trated as applied to ?xed type ammunition;
which is covered by a cap plate 28’. In this hole
Fig. 2 is a section taken on the line 2-2 of
is positioned a primer 27a and a fuse 26 which
illustrate a preferred embodiment of the inven
tion. However, such description shall be taken as
Fig. 1;
Fig. 3 is a section taken on line 3-3 of Fig. 1;
Fig. 4 shows the projectile of Fig. 1 in ?ight at
the instant of initiation of discharge of the sec
passes through the plate 28'. The ?ash tube 22
connects with the powder chamber of the me
chanical fuse and is sealed by a primer 22a. The
head of the member I9 is tapped at 20 to receive
ondary projectile;
a mechanical fuse 2| of conventional design. The
Fig. 5 is a fragmentary section taken along the
nose of member I9 is formed to provide an over
line 5—5 of Fig. 1;
20 hanging lip whose bottom is developed as an
Fig. 6 is a detail of the trigger mechanism; and
annulus whose surface is complementary to and
Fig. 7 is a section taken along the line ‘I_-‘l
will rest over the noses of the spherical secondary
of Fig. 5.
.
projectiles, for instance, as a spherical annulus
As shown in Fig. 1, the projectile I which is
which registers with the spherical sectors form
carried in shell case I’ is formed of four hollow
ing the nose of the sectoral projectiles I2. The
annulus sectors 2, hereinafter referred to as “sec
sectors 2 and the projectiles I2 are thus locked
tors.” They are ?tted about a central tube 4.
in place beneath the lip, which acts as a latch to
Each of the sectors is formed with curved sides
hold them in axially aligned position, and the
Ia to Id and 5a and 5d, and straight sides 6a to
shell surface forms a smooth streamlined surface
6d. When assembled, the sides Ia to I01 form a 30 which may be of any desired ballistic contour.
smooth cylindrical surface and sides 6a to‘ 6d
The operation of the projectile is as follows.
?t against each other, and sides 5a to 5d fit
The fuse mechanism having been set for the de
around the central tube 4 to form a cylinder of
sired ?ight, the projectile is ?red from the shell
smooth exterior surface. The sectors are closed
case I’. During the. ?ight of the projectile, the
at their bottom ends and are hinged to the bot 35 sectors 2, the secondary projectiles I2, and the
tom of tube 4 by hinges 2a to 2d. The bottoms
member I9 remain in locked position, and the
of sectors 2 are relieved as shown in Fig. 2 by an
ballistic coef?cient of the shell remains constant.
angular bevel 8, whose function will be described
The trajectory of the shell is that of a normal
later. In each of the sectors which act as sec
shell
of like caliber and ballistic coe?'icient. At
ondary cartridges is set a secondary hollow pro 40 a predetermined
point in the trajectory, deter
jectile I2. These projectiles reach part way to
the bottom of their receiving sectors, thus leaving
a space It to act as a reservoir for a charge of
mined by the setting of the mechanical fuse 2|,
the ?ash of the fuse passes down the ?ash tube
22 and the primer 22a ignites the propellant pow
propulsive powder. The sides of the projectiles
der in chamber I8. The amount of the powder
I2 are recessed at I I to ?t over the end of the
is sufficient merely to move the member I9 only
sides I a to Id. The nose of the sectoral projec
part way inrthe tube to the position shown in Fig.
tiles is developed as a sector of a surface of revo
4. In this position the tip of the lip clears the
lution such as spherical sector I3. The bottom
highest point of the nose of the sectoral pro
of each of the projectiles I2 carry a fuse chamber
jectiles I2.. The centrifugal force of the spin and
I6a covered by a cap plate I l. The bottom of the 50 yaw of the projectile in it ?ight and the wind
sector is pierced by a hole l5 carrying a suitable
pressure will forcethe'sides Ia to Id to the ex
primer I Ila. The chamber I4 of each of the pro»
tended position shown in Fig. 4, where their axes
jectiles carries a charge of explosivepowder. A
make an angle axis of the tube 11. In this posi
fuse passes through the cap I1, is positioned in
tion the adjacent beveled surfaces 8 fit against
chamber IBa, and passes through the hole I5. '
each other to act as the stops for holdingrthe
Instead of a dynamite type fuse other types of
sectors in their chosen angular position. When
time fuses may be provided in the chamber IBa,
these surfaces 8 approach each other the pin 3Ia
such as a mechanical time fuse such as is used
in each projectile is pushedinward as the adja
in anti-aircraft artillery.
,
V '
cent surface 8 abuts against the pin 3ia. The
The beveled surface 8 is tapped at 25 to receive 60 ?ring pin is held in the position shown in Fig. 5
a trigger mechanism 28, illustrated in Figs. 5 to 7,
until the movement of the pin 3 la, resulting from
inclusive. One is provided in each of the sec
the approach of the surfaces 8 as the sectors
toral projectiles. Stud 29 carries a tube 3!] carry
reach their lower positions, moves the bracket
ing a cap plate 3I and pierced‘ with a hole 49 and
32 to an upward position where the plate 38
also carrying a tubular guide 39. A trigger pin
clears the opening 34 and passes through the
3Ia passes through the stud 29' with a, smooth
opening 33. This occurs only when the sectors
sliding ?t. The pin carries a bracket 32 which is
reach their lowest position and the adjacent sur
cut out to form openings 33 and 34 to give pas
faces 8 abut each other. When this position is
sages or ori?ces of different width. .The bracket
reached the spring 3'! forcesthe pin and shoulder
32 acts against a compression spring 35. Guided
through the opening 33 and ?ring pin 36 hits the
in guide 39 is a pin 36 axially aligned with hole
cap 4|.
,.
40 and carrying a circular plate-38 whose diam
It will be undcrstoodthat this operation occurs
eter is greater than the width of the opening
in each of the sectors 2 simultaneously. 'We then
34 and less than the width of the opening 33.
have a simultaneous explosion of the propellant
Between this plate and the wall of the'tube 3,3
powder in each of the sectors 2 and a simulta
2,412 ,1 5 1
6
5
explosive powder in said secondary projectiles
neous‘ ejection oi the sectoral secondary projec
tiles l2. Due to this simultaneous ejection, the
recoil action resulting irom'the ejection of the
.severalprojectiles substantially neutralize each
other.
and in said latching member, time-controlled fuse
mechanism in said central tubular member to
ignite the charge ofpropulsive powder in said
central tubular member to move said latching
member to unlatching position, stops for ‘holding
said annulus sector sections at substantially a
right angle to the axis of ‘said tubular member,
upon the unlatching of said latch, trigger mech
The angle of the axis of the sectors 2 to -
the axis tube 4, and thus to the axis of the pro
jectile and also to the trajectory'of the ?ight, is
preferably made to approach 90", say about 80
to 85", more or less. This will result in the ejec
tion of the projectiles in directions substantially ii anism operated to ignite the charges of propul
sive powder in said annulus sectors upon arrival
perpendicular to the trajectory of the mainpro
of said sectors at said angle, a. fuse forigniting
jectile. It will hold the recoil vector to a mini
the charges of explosive powder
said latch
mum and will disperse the projectiles in a direc
member, and fuses in said secondary projectiles.
eion laterally from the main projectile.
3. A projectile comprising: ‘a. central tube car
Upon ignition of the powder in chamber E8.
tridge
and a plurality of annulus sector cartridge
the fuse'25 is ignited. Upon ignition of the pow
sections circumferentially nested around said tu
der in chamber [5 of each of the sectors 2, the
bular section and hingedly connected thereto, said
fuses 15a in each of the projectiles l2 are also
sectors forming a smooth exterior ‘cylinder, sec
ignited. The fuses 26 and l?a in projectiles l2
ondary projectiles positioned in said annulus-sec
-and member ii} are so timed that they will 51- .
tors, a latching member positioned in said cen
multaneously, through the medium of the primers
tral tube, said latching member carrying an over
Ma and 21a, explode the explosive powder in the
hanging lip section engaging the noses of said
chamber M of each of the projectiles l2 and in
projectiles and interlocking :with'said secondary
chamber 25 of member H3 at a predetermined
interval of time after the expulsion of the pro- ._
jectiles 12 from their respective sides Ia to Id.
There is therefore a simultaneous explosion and
fragmentation of the projectiles i2 and the mem~
ber 19 and with it the shell case composed- of
tube 4 and also sides la to ld.
,
~
Si)
The timing of the several explosions is prei~
projectiles to form a smooth exterior ballistic
surface, in cooperation with the latching rnem
ber, charges of propulsive .powder- in said tubular
member and in said sectors, charges of explosive
powder in said secondary projectiles and in said
latching -member,_ time-controlled 3fuse mecha~
nismin said central tubular member toignite‘the .
charge of propulsive powderin said central tubu
lar member to move, saidilatching ‘member to
unlatching position, stops» for ‘holding said "an
nulus sector sections at substantially'a right. an—
35
at various times so that any distribution of ex
gle to the axis of saidtubular member,l-upon the
plosions and any force pattern may be created.
unlatching of said latch, trigger mechanism on
The propulsion force and the timing of the sev
erated to ignite the charges of propulsive powder
eral explosions arealso such as to give the de
in ‘said annulus sectors upon arrival of said sec
sired force pattern as described above.
tors at said- angle, a fuse for igniting'the charges
The embodiment of my invention here shown 40 of explosive powderin said latch/member, and
and described is for the purpose of illustration
fuses in said secondary projectiles. .
~
only, and various changes and modi?cations may
$1,. A projectile comprising: a central tube car,
be made therein without departing from the spirit
tridge and a plurality of annulus sectorycartridge'
of the appended claims.
sections circumferentially nested around‘. said
I claim:
tubular section andhingedly connected thereto,
1. A projectile comprising: a plurality of hinged
said sectors forming a smooth-exterior cylinder,
erably such that the explosions occur at sub
stantially the same time. However, by a differ
ent timing, the explosions may be made to occur
hollow cartridge sections,_ secondary projectiles
positioned in said hinged cartridge sections,
means for holding said sections'in locked posi
tion axially aligned with each other, means'for
unlocking said sections upon the passage. of a
predetermined time interval, means for holding
said sections in a position substantially at a right
angle to said ?rst-named axially aligned position,
a trigger comprising a trigger pin, a ?ring. pin, 5
means connected to said trigger pin for holding
said pin in safe position, means for moving said
trigger pin upon arrival of said sections at said
position, means operatively connected to said trig
ger pin for unlatching said firing pin, a detonat
ingr capv in said cartridge sections whereby on the
unlatching of said firing pin said pin strikes said
detonating cap.
-
2. A projectile comprising: a central tube car
tridge. and a plurality of annulus sector cartridge
sections circumferentially nested around said tu
bular section and hingedly connected thereto,
said sectors forming a smooth exterior cylin“
der, secondary projectiles positioned in said an
,nulus sectors, a latching member positioned in "
said central tube and interlocking withsaid sec~
ondary projectiles to form a smooth exterior bal
listic surface in cooperation with the. latching
member, charges of propulsive powder in’ said
tubular member and in said sectors, charges of
secondary projectiles positioned in said annulus
sectors, the noses of .said secondary projectiles
being developed as a sector-of a surface of revolu
tion,a latching member positioned in said cen
tral tube, said latching member carrying a section
, cemplementary to and ?tting over said noses and
interlocking with said secondary projectiles ;to
form a smooth exterior-ballistic surface, in co
operation with ‘the latching member, charges of
propulsive powder- in said tubular member and
in said sectors, charges of explosivepowder in
said secondary projectiles; and in said latching
member, time-controlled vfuse mechanism ‘In- said
central tubular member to ignite the charge of
propulsive powder in said centraltubular member
to move said latching member to unlatching posi
tion, stops for holding said annulus sector sec
tions at substantially a right angle to the axis of
said tubular member, upon the unlatching-oisaid
latch, trigger mechanism- operated to ignite the
charges of propulsive powderin said annulus sec
tors upon arrival of said sectors at said-angle, a
fuse for igniting thev charges of explosive powder
in said latch member, and fuses in ‘said secondary
projectiles.
5. A projectile comprising:
1
I
'
.
.
.1
central tube car,
tridge and a plurality of annulus sector cartridge
sections ciroumfe'rentially; nested aroundgsaid
‘2,412,151
7
tubular section and hingedly connected thereto,
shoulder to permit the passage of said ?ring pin
through the medium of said spring through said
said sectors forming a smooth exterior cylinder,
secondary projectiles positioned in said annulus
sectors, a latching member positioned in said
1 central tube and interlocking with said secondary
ori?ce to strike said detonating cap, a fuse for
igniting the charges of explosive powder in said
latch member, and fuses in said secondary pro
projectiles to form a smoothexterior ballistic sur
jectiles.
'
face in cooperation with the latching member,
7. A projectile comprising: a central tube car
charges of propulsive powder in said tubular
tridge and a plurality of annulus sector cartridge
member and in said sectors, charges of explosive
powder in said secondary projectiles and in said 10 sections circumferentially nested around said tu
bular sections and hingedly connected thereto,
latching member, time-controlled fuse mech
said sec-tors forming a smooth exterior cylinder,
anism in said central tubular member to ignite
secondary projectiles positioned in said annulus
the'charge of propulsive powder in said central
sectors, a latching member positioned in said
tubular member to move said latching member to
central
tube and interlocking with said second
unlatching position, stops for holding said tubu
ary projectiles to form'a smooth exterior ballistic
surface in cooperation with the latching mem
' lar member at substantially a right angle to the
“axis of said‘ annulus sector sections, upon the un
ber, charges of propulsive powder in saidtubular
member and in said'sectors, charges of explosive
said annulus sectors upon arrival of said sectors 20 powder in said secondary projectiles and in said
latching member, time-controlled fuse mecha
at said angle, said trigger mechanism compris
latching of said latch, trigger mechanism 'oper
ated to ignite the charges of propulsive powder in
nism in said central tubular member to ignite the
ing a trigger pin, a bracket attached to said trig
charge of propulsive powder in said central tubu
‘ger pin, an ori?ce in said bracket, said bracket
lar member to move said latching member to un
operating against a compression spring, a ?ring
pin, a shoulder on said?ring pin operating against 25 latching position, and means for holding said an.
nulus sector sections at a substantial angle to
a compression spring, said bracket holding said
the axis of said tubular member, upon the un
?ring, pin in open position, a detonating cap
,
7
in
'
latching of said latch. '
said cartridge chamber of said annulus sectors
8. A projectile comprising: a central tube car
whereby, upon the approach of said sectors to
tridge
and a plurality of annulus sector cartridge
said stop, the trigger pin on abutment against
sections circumferentially nested around said tu
'said stop moves said bracket to register ‘said
bular section and hingedly connected thereto,
ori?ce with'said shoulder to permit the passage
said sectors forming a smooth exterior cylinder,
'of said ?ring pin with a medium of said spring
secondary projectiles positioned in said'annulus
through said ori?ce to strike said detonating cap,
sectors, a latching member positioned in said cen
agfuse for igniting the charges of explosive powder
trol tube an interlocking with said secondary pro
in said latch member, and fuses in said secondary
projectiles.
'
'
jectiles to form a smooth exterior ballistic sur
'
face in cooperation with the latching member,
charges of propulsive powder in said tubular
' 6. A projectile comprising: a central tube car'
tridge and‘ a plurality of annulus sector cartridge
sections circumferentially nested around said
tubular section and hingedly connected thereto,
member and in said sectors, charges of ‘explosive
powder in ‘said secondary projectiles and in said
40
latching member, time-controlled fuse mecha
said sectors forming a smooth exterior cylinder,
secondary projectiles positioned in said annulus
sectors, thenoses of said secondary projectiles be
ing developed as a sector, of a surface ofv revolu
tion, a latching member positioned in said cen
nism in said central tubular member to ignite
the charge of propulsive powder’ in said central
tubular member to move said latching member
ha. cl
‘interlocking with said secondary projectiles to
form a smooth exterior ballistic surface, in co
operation with the latching member, charges of
propulsive powder in said tubular member and
in‘said sectors, charges of explosive powder in
said secondary projectiles and in said latching
member, time-controlled fuse mechanism in said
‘central tubular member to ignite the charge of
propulsive powder in said central tubular mem
her to move said latching member to unlatching
to unlatching position, means for holding said
annulus sector sections at a substantial angle to
the axis of said tubularmember, upon the un
latching of said latch, and means for ?ring said
- propulsive charges in said cartridge sections when
tral tube, said latching member carrying a section
complementary to and ?tting over said noses and
an C
said sections have arrived at their right-angled
positions.
9. A projectile comprising: a central tube car
tridge and a plurality of annulus sector cartridge
- sections circumferentially nested around said tu
bular section and hingedly connected thereto, said
sectors forming a smooth exterior cylindensec
ondary projectiles positioned in said annulus sec_
position, stops for holding said tubular member’ tors, a latching member positioned in said cen
tral tube, said latching member carrying an over
at substantally a right angle to the axis of said
annulus sector sections, upon the unlatching of 60 hanging lip section engaging the noses of said
said'latch, trigger mechanism operated to ignite
the charges of propulsive powder in said annulus
sectors upon arrival of said sectors at said angle,
said trigger mechanism comprising a trigger pin,
a bracket attached to said trigger pin, an ori?ce
‘in said bracket, said bracket operating against a
projectiles and interlocking with said secondary
projectiles to form a smooth exterior ballistic
surface, in cooperation with the latching mem
ber, charges of propulsive powder in said tubular
(55
member and in said sectors, charges of explosive
powder in said secondary projectiles and in said
compression spring, a ?ring pin, a shoulder on
latching member, time-controlled fuse mecha
~said ?ring pin operating against a compression
nism in said central tubular member to ignite the
charge of propulsive powder in said central tubu
spring, said bracket holding said ?ring pin “in
open position, a detonating cap in said cartridge
chamber of said annulus sectors whereby, upon
the approach of said sectors to said stop, the
trigger pin on abutment against said stop, moves
‘said ‘bracket to register said jori?ce with said
lar member to move said latching member to un
latchingrposition, means for holding said annu»
lus sector sections at substantially a right ‘angle
to the axis of saidtubular member, upon the un
f latching of said latch, and means for ?ring said
propulsive charges in said cartridge sections when
2,412,151
19
said sections have arrived at their right-angled
ignite the charge of propulsive powder in said
position.
member to unlatching position, stops, for holding
10. A projectile comprising: a central tube car
tridge and a plurality of annulus sector cartridge
sections circumferentially nested around said tu
bular section and hingedly connected. thereto,
said sectors forming a smooth exterior cylinder,
central tubular member to move said latching
said annulus sector sections at substantially a
right angle to the axis of said tubular member,
upon the unlatching of said latch, and means for '
?ring said propulsive charges in said cartridge
secondary projectiles positioned in said annulus
sections when said sections have arrived at their
sectors, a latching member positioned in said cen
tral tube, said latching member carrying an over
hanging lip section engaging the noses of said
12. A projectile comprising: a central tube car
tridge and a plurality of annulus sec-tor cartridge
projectiles and interlocking with said secondary
projectiles to form a smooth exterior ballistic
surface, in cooperation with the latching mem
ber, charges of propulsive powder in said tubular
member and in said sectors, means in said cen
tral tubular member to ignite the charge of pro
pulsive powder in said central tubular member
to move said latching member to unlatching po
sition, and means for holding said annulus sec
tor sections at substantially a right angle to the
axis of said tubular member, upon the unlatch
ing of said latch.
11. A projectile comprising: a central tube car
tridge and a plurality of annulus sector cartridge
sections circumferentially nested around said tu
bular section and hingedly connected thereto,
said sectors forming a smooth exterior cylinder,
secondary projectiles positioned in said annulus
right-angled positions.
sections circumferentially nested around said tu
bular section and hingedly connected thereto,
said sectors forming a smooth exterior cylinder,
secondary projectiles positioned in said annulus
sectors, the noses of said secondary projectiles
being developed as a sector of a surface of rev
olution, a latching member positioned in said cen
tral tube, said latching member carrying a section
complementary to and ?tting over said noses and
interlocking with said secondary projectiles to
form a smooth exterior ballistic surface, in coop
eration with the latching member, charges of
propulsive powder in said. tubular member and
in said sectors, charges of explosive powder in
said secondary projectiles and in said latching
member, time-controlled fuse mechanism in said
central tubular member to ignite the charge of
propulsive powder in said central tubular mem
sectors, a latching member positioned in said cen 31 ber to move said latching member to unlatching
position, stops for holding said annulus sector
tral tube, said latching member carrying an over
sections at substantially a right angle to the axis
hanging lip section engaging the noses of said
of said tubular member, upon the unlatching of
projectiles and interlocking with said secondary
said latch, and means for firing said propulsive
projectiles to form a smooth exterior ballistic sur
charges in said cartridge sections when said sec
face, in cooperation with the latching member,
tions have arrived at their right-angled positions.
charges of propulsive powder in said tubular mem
ber and in said sectors, time-controlled fuse
mechanism in said central tubular member to
LAWRENCE HOLMES, JR.
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